Equation. An equation "equates" two things. g-h itself is an expression, but the equal sign is a dead giveaway that it is an equation.
The representation g-h=8 is an equation in mathematics, not an expression. This is because it states that the difference of two **variables **equals to a specific value. ;
The notation g − h = 8 is an equation because it states that the difference between g and h is equal to 8. An equation always includes an equals sign, indicating a relationship between two expressions. In contrast, g − h alone would be considered an expression.
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